Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5697939267038e4a9169c184bb621dae9b691503b09de7f1dee600d736f28591' 
  AND token = 'SelLAI2udOWGjdp4yb+9f9RnHOOqkJnJSa8UngRzbLg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}